Bulk SMS Caster Enterprise helps to send bulk SMS from PC or Laptop to Mobiles.
Discover invisible Yahoo! Messenger users and keep track of their online time
A free app for Windows, by Meng Tan
Bopup Communication Server
Hold virtual meetings easily
bClient is the program for sending SMS and Email messages.
Cross-network IM client with support for Facebook
Remote access, videoconferencing, chat and VOIP app
Keep using your favorite version of Windows Live Messenger